Exception: Object reference not set to an instance of an object.Target site: Microsoft.Xna.Framework.Vector2 get_SimPosition()Stack trace: at Barotrauma.AITarget.get_SimPosition() in E:\Barotrauma\Barotrauma\BarotraumaShared\Source\Characters\AI\AITarget.cs:line 39 at Barotrauma.AIObjectiveIdle.Act(Single deltaTime) in E:\Barotrauma\Barotrauma\BarotraumaShared\Source\Characters\AI\Objectives\AIObjectiveIdle.cs:line 110 at Barotrauma.AIObjective.TryComplete(Single deltaTime) in E:\Barotrauma\Barotrauma\BarotraumaShared\Source\Characters\AI\Objectives\AIObjective.cs:line 60 at Barotrauma.AIObjectiveManager.DoCurrentObjective(Single deltaTime) in E:\Barotrauma\Barotrauma\BarotraumaShared\Source\Characters\AI\Objectives\AIObjectiveManager.cs:line 65 at Barotrauma.HumanAIController.Update(Single deltaTime) in E:\Barotrauma\Barotrauma\BarotraumaShared\Source\Characters\AI\HumanAIController.cs:line 62 at Barotrauma.AICharacter.Update(Single deltaTime, Camera cam) in E:\Barotrauma\Barotrauma\BarotraumaShared\Source\Characters\AICharacter.cs:line 49 at Barotrauma.Character.UpdateAll(Single deltaTime, Camera cam) in E:\Barotrauma\Barotrauma\BarotraumaShared\Source\Characters\Character.cs:line 1326 at Barotrauma.GameScreen.Update(Double deltaTime) in E:\Barotrauma\Barotrauma\BarotraumaShared\Source\Screens\GameScreen.cs:line 100 at Barotrauma.GameMain.Update(GameTime gameTime) in E:\Barotrauma\Barotrauma\BarotraumaClient\Source\GameMain.cs:line 376 at Microsoft.Xna.Framework.Game.DoUpdate(GameTime gameTime) at Microsoft.Xna.Framework.Game.Tick() at MonoGame.Framework.WinFormsGameWindow.RunLoop() at MonoGame.Framework.WinFormsGamePlatform.RunLoop() at Microsoft.Xna.Framework.Game.Run(GameRunBehavior runBehavior) at Barotrauma.Program.Main() in E:\Barotrauma\Barotrauma\BarotraumaClient\Source\Program.cs:line 41